We also gave up on the GHL Mitras for our SPS system. Just not enough PAR to keep them well colored.

Currently swapping them out for 400w 20k Radium MH. :mrgreen:

yeah im having a hell of a time finding a color that i like that the corals like as well , i have something down now and the corals seem to be loving the spectrum but i personally hate the color.

my sps issue was more of poor reefer practise and we wanted an instant sps tank so dipping got skipped, i knew better but it is what it is . first came the nudis for montipora then ended in a AEFW bout.

as far as leds go period theres none that i really like , seems if you play with the colors to something that is visually appealing the corals suffer.

i had to drop the mitras down another 4" but seems to bleach lps easily enough , my chalices arnt happy at all but everything else has finally come around:)


cheers


denny

Ya he looks good if i knew i was upgrading and that he wouldn't have to be hand fed i probably would've kept him but he looks so happy in his new/old home.:biggrin::lol::razz:

400w Radium give off a lot less PAR then the GHL Mitras I dont think it can be done. where you lamps on 100%

Xenon, this would be an absolute first, your systems are very new on the scheme of things I highly doubt in 12" water you have PAR issues when tanks 3 times that depth are turning their lamps down due to burning corals.

Even a commercial system

Mitras system in 30" of water

http://farm4.staticflickr.com/3683/1...438469db_b.jpg

I can show you proof of my PAR readings if you would like. Acro's need more than 150-200 PAR to color up.

I would rather keep the Mitras than swap them out for older technology but they just don't work to color up SPS due to low PAR (too much light spread).

I have spent enough time with them to know for sure.

I can assure you the brightness of a 400w Radium completely blows away the GHL Mitras with all color channels @ 100%.

:pop2:

i would love to see the results as i find them dim to the eye but obviously they bleach lps pretty easily if at a higher intensity.

Hiya Dan, I really am confused, not one person globally has ever said the PAR is too low in fact the opposite, here are some independent tests

http://i358.photobucket.com/albums/o...y_ri/019-3.jpg

I think user SPS photos say a lot also.

http://i218.photobucket.com/albums/c...psed93d724.jpg

http://test.reefcentral.com/forums/s...219645&page=30

I really have no idea why your PAR meter would read so low to be honest, but good luck with the Radiums 400's hope they work out for you.